cleanup: function attribute 'destructor'
[lttng-ust.git] / include / lttng / ust-tracepoint-event.h
index 4fc1ea91aa8c6f49abe3e5871221d4db5110f0af..cf7707596305b1871effda429a8cde341448979b 100644 (file)
@@ -11,6 +11,7 @@
 #include <urcu/rculist.h>
 #include <lttng/ust-events.h>
 #include <lttng/ringbuffer-context.h>
+#include <lttng/ust-arch.h>
 #include <lttng/ust-compiler.h>
 #include <lttng/tracepoint.h>
 #include <lttng/ust-endian.h>
@@ -150,14 +151,14 @@ void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)
        __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, {         \
                .struct_size = sizeof(struct lttng_ust_enum_entry),             \
                .start = {                                              \
-                       .value = lttng_is_signed_type(__typeof__(_value)) ? \
+                       .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \
                                (long long) (_value) : (_value),        \
-                       .signedness = lttng_is_signed_type(__typeof__(_value)), \
+                       .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \
                },                                                      \
                .end = {                                                \
-                       .value = lttng_is_signed_type(__typeof__(_value)) ? \
+                       .value = lttng_ust_is_signed_type(__typeof__(_value)) ? \
                                (long long) (_value) : (_value),        \
-                       .signedness = lttng_is_signed_type(__typeof__(_value)), \
+                       .signedness = lttng_ust_is_signed_type(__typeof__(_value)), \
                },                                                      \
                .string = (_string),                                    \
        }),
@@ -168,14 +169,14 @@ void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)
        __LTTNG_COMPOUND_LITERAL(struct lttng_ust_enum_entry, {         \
                .struct_size = sizeof(struct lttng_ust_enum_entry),             \
                .start = {                                              \
-                       .value = lttng_is_signed_type(__typeof__(_range_start)) ? \
+                       .value = lttng_ust_is_signed_type(__typeof__(_range_start)) ? \
                                (long long) (_range_start) : (_range_start), \
-                       .signedness = lttng_is_signed_type(__typeof__(_range_start)), \
+                       .signedness = lttng_ust_is_signed_type(__typeof__(_range_start)), \
                },                                                      \
                .end = {                                                \
-                       .value = lttng_is_signed_type(__typeof__(_range_end)) ? \
+                       .value = lttng_ust_is_signed_type(__typeof__(_range_end)) ? \
                                (long long) (_range_end) : (_range_end), \
-                       .signedness = lttng_is_signed_type(__typeof__(_range_end)), \
+                       .signedness = lttng_ust_is_signed_type(__typeof__(_range_end)), \
                },                                                      \
                .string = (_string),                                    \
        }),
@@ -223,13 +224,13 @@ void __event_template_proto___##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args)
 #define _ctf_array_encoded(_type, _item, _src, _byte_order,    \
                        _length, _encoding, _nowrite,           \
                        _elem_type_base)                        \
-       _lttng_array_element_type_is_supported(_type, _item)
+       lttng_ust_ctf_array_element_type_is_supported(_type, _item)
 
 #undef _ctf_sequence_encoded
 #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, \
                        _length_type, _src_length, _encoding, _nowrite, \
                        _elem_type_base)                        \
-       _lttng_array_element_type_is_supported(_type, _item)
+       lttng_ust_ctf_array_element_type_is_supported(_type, _item)
 
 #undef TP_FIELDS
 #define TP_FIELDS(...) __VA_ARGS__     /* Only one used in this phase */
@@ -405,26 +406,26 @@ static void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args));
 
 #undef _ctf_integer_ext
 #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite)       \
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+       __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
        __event_len += sizeof(_type);
 
 #undef _ctf_float
 #define _ctf_float(_type, _item, _src, _nowrite)                                \
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+       __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
        __event_len += sizeof(_type);
 
 #undef _ctf_array_encoded
 #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length, _encoding,         \
                        _nowrite, _elem_type_base)                               \
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+       __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
        __event_len += sizeof(_type) * (_length);
 
 #undef _ctf_sequence_encoded
 #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type,    \
                        _src_length, _encoding, _nowrite, _elem_type_base)       \
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_length_type));   \
+       __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_length_type));   \
        __event_len += sizeof(_length_type);                                   \
-       __event_len += lib_ring_buffer_align(__event_len, lttng_alignof(_type)); \
+       __event_len += lttng_ust_lib_ring_buffer_align(__event_len, lttng_ust_rb_alignof(_type)); \
        __dynamic_len[__dynamic_len_idx] = (_src_length);                      \
        __event_len += sizeof(_type) * __dynamic_len[__dynamic_len_idx];       \
        __dynamic_len_idx++;
@@ -476,7 +477,7 @@ size_t __event_get_size__##_provider##___##_name(size_t *__dynamic_len, _TP_ARGS
 
 #undef _ctf_integer_ext
 #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite)     \
-       if (lttng_is_signed_type(_type)) {                                     \
+       if (lttng_ust_is_signed_type(_type)) {                                 \
                int64_t __ctf_tmp_int64;                                       \
                switch (sizeof(_type)) {                                       \
                case 1:                                                        \
@@ -627,22 +628,22 @@ void __event_prepare_interpreter_stack__##_provider##___##_name(char *__stack_da
 
 #undef _ctf_integer_ext
 #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite)     \
-       __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+       __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
 
 #undef _ctf_float
 #define _ctf_float(_type, _item, _src, _nowrite)                              \
-       __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+       __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
 
 #undef _ctf_array_encoded
 #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length,          \
                        _encoding, _nowrite, _elem_type_base)                  \
-       __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+       __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
 
 #undef _ctf_sequence_encoded
 #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type,   \
                        _src_length, _encoding, _nowrite, _elem_type_base)     \
-       __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_length_type));    \
-       __event_align = _tp_max_t(size_t, __event_align, lttng_alignof(_type));
+       __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_length_type));     \
+       __event_align = _tp_max_t(size_t, __event_align, lttng_ust_rb_alignof(_type));
 
 #undef _ctf_string
 #define _ctf_string(_item, _src, _nowrite)
@@ -687,43 +688,42 @@ size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args))      \
 #define _ctf_integer_ext(_type, _item, _src, _byte_order, _base, _nowrite) \
        {                                                               \
                _type __tmp = (_src);                                   \
-               lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\
-               __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
+               __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\
        }
 
 #undef _ctf_float
 #define _ctf_float(_type, _item, _src, _nowrite)                       \
        {                                                               \
                _type __tmp = (_src);                                   \
-               lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(__tmp));\
-               __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp));\
+               __chan->ops->event_write(&__ctx, &__tmp, sizeof(__tmp), lttng_ust_rb_alignof(__tmp));\
        }
 
 #undef _ctf_array_encoded
 #define _ctf_array_encoded(_type, _item, _src, _byte_order, _length,   \
                        _encoding, _nowrite, _elem_type_base)           \
-       lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type));        \
-       __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length));
+       if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \
+               __chan->ops->event_write(&__ctx, _src, sizeof(_type) * (_length), lttng_ust_rb_alignof(_type)); \
+       else                                                            \
+               __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), _length); \
 
 #undef _ctf_sequence_encoded
 #define _ctf_sequence_encoded(_type, _item, _src, _byte_order, _length_type, \
                        _src_length, _encoding, _nowrite, _elem_type_base) \
        {                                                               \
                _length_type __tmpl = __stackvar.__dynamic_len[__dynamic_len_idx]; \
-               lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_length_type));\
-               __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type));\
+               __chan->ops->event_write(&__ctx, &__tmpl, sizeof(_length_type), lttng_ust_rb_alignof(_length_type));\
        }                                                               \
-       lib_ring_buffer_align_ctx(&__ctx, lttng_alignof(_type));        \
-       __chan->ops->event_write(&__ctx, _src,                          \
-               sizeof(_type) * __get_dynamic_len(dest));
+       if (lttng_ust_string_encoding_##_encoding == lttng_ust_string_encoding_none) \
+               __chan->ops->event_write(&__ctx, _src,                  \
+                       sizeof(_type) * __get_dynamic_len(dest), lttng_ust_rb_alignof(_type));  \
+       else                                                            \
+               __chan->ops->event_pstrcpy_pad(&__ctx, (const char *) (_src), __get_dynamic_len(dest)); \
 
 #undef _ctf_string
-#define _ctf_string(_item, _src, _nowrite)                             \
+#define _ctf_string(_item, _src, _nowrite)                                     \
        {                                                                       \
                const char *__ctf_tmp_string =                                  \
                        ((_src) ? (_src) : __LTTNG_UST_NULL_STRING);            \
-               lib_ring_buffer_align_ctx(&__ctx,                               \
-                       lttng_alignof(*__ctf_tmp_string));                      \
                __chan->ops->event_strcpy(&__ctx, __ctf_tmp_string,             \
                        __get_dynamic_len(dest));                               \
        }
@@ -766,11 +766,11 @@ size_t __event_get_align__##_provider##___##_name(_TP_ARGS_PROTO(_args))      \
 #define _TP_IP_PARAM(x)                (x)
 #else /* TP_IP_PARAM */
 
-#if defined(__PPC__) && !defined(__PPC64__)
+#if defined(LTTNG_UST_ARCH_PPC) && !defined(LTTNG_UST_ARCH_PPC64)
 #define _TP_IP_PARAM(x)                NULL
-#else /* #if defined(__PPC__) && !defined(__PPC64__) */
+#else
 #define _TP_IP_PARAM(x)                __builtin_return_address(0)
-#endif /* #else #if defined(__PPC__) && !defined(__PPC64__) */
+#endif
 
 #endif /* TP_IP_PARAM */
 
@@ -796,6 +796,7 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))           \
                char __interpreter_stack_data[2 * sizeof(unsigned long) * __num_fields]; \
        } __stackvar;                                                         \
        int __ret;                                                            \
+       bool __interpreter_stack_prepared = false;                            \
                                                                              \
        if (0)                                                                \
                (void) __dynamic_len_idx;       /* don't warn if unused */    \
@@ -821,24 +822,12 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))         \
                return;                                                       \
        if (caa_unlikely(!TP_RCU_LINK_TEST()))                                \
                return;                                                       \
-       if (caa_unlikely(!cds_list_empty(&__event->filter_bytecode_runtime_head))) { \
-               struct lttng_ust_bytecode_runtime *__filter_bc_runtime;       \
-               int __filter_record = __event->has_enablers_without_bytecode; \
-               struct lttng_ust_bytecode_filter_ctx filter_ctx;              \
-                                                                             \
-               filter_ctx.struct_size = sizeof(struct lttng_ust_bytecode_filter_ctx); \
+       if (caa_unlikely(CMM_ACCESS_ONCE(__event->eval_filter))) { \
                __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \
                        _TP_ARGS_DATA_VAR(_args));                            \
-               tp_list_for_each_entry_rcu(__filter_bc_runtime, &__event->filter_bytecode_runtime_head, node) { \
-                       if (caa_likely(__filter_bc_runtime->interpreter_func(__filter_bc_runtime, \
-                               __stackvar.__interpreter_stack_data, &filter_ctx) == LTTNG_UST_BYTECODE_INTERPRETER_OK)) { \
-                               if (caa_unlikely(filter_ctx.result == LTTNG_UST_BYTECODE_FILTER_ACCEPT)) { \
-                                       __filter_record = 1;                  \
-                                       break;                                \
-                               }                                             \
-                       }                                                     \
-               }                                                             \
-               if (caa_likely(!__filter_record))                             \
+               __interpreter_stack_prepared = true;                          \
+               if (caa_likely(__event->run_filter(__event, \
+                               __stackvar.__interpreter_stack_data, NULL) != LTTNG_UST_EVENT_FILTER_ACCEPT)) \
                        return;                                               \
        }                                                                     \
        switch (__event->type) {                                              \
@@ -848,18 +837,13 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))         \
                struct lttng_ust_event_recorder *__event_recorder = (struct lttng_ust_event_recorder *) __event->child; \
                struct lttng_ust_channel_buffer *__chan = __event_recorder->chan; \
                struct lttng_ust_lib_ring_buffer_ctx __ctx;                   \
-               struct lttng_ust_stack_ctx __lttng_ctx;                       \
                                                                              \
                __event_len = __event_get_size__##_provider##___##_name(__stackvar.__dynamic_len, \
                         _TP_ARGS_DATA_VAR(_args));                           \
                __event_align = __event_get_align__##_provider##___##_name(_TP_ARGS_VAR(_args)); \
-               memset(&__lttng_ctx, 0, sizeof(__lttng_ctx));                 \
-               __lttng_ctx.struct_size = sizeof(struct lttng_ust_stack_ctx);     \
-               __lttng_ctx.event_recorder = __event_recorder;                \
-               lib_ring_buffer_ctx_init(&__ctx, __chan->chan, &__lttng_ctx, __event_len, \
-                                        __event_align, -1, __chan->handle); \
-               __ctx.ip = _TP_IP_PARAM(TP_IP_PARAM);                         \
-               __ret = __chan->ops->event_reserve(&__ctx, __event_recorder->id); \
+               lttng_ust_lib_ring_buffer_ctx_init(&__ctx, __event_recorder, __event_len, __event_align, \
+                               _TP_IP_PARAM(TP_IP_PARAM));                   \
+               __ret = __chan->ops->event_reserve(&__ctx);                   \
                if (__ret < 0)                                                \
                        return;                                               \
                _fields                                                       \
@@ -869,13 +853,18 @@ void __event_probe__##_provider##___##_name(_TP_ARGS_DATA_PROTO(_args))         \
        case LTTNG_UST_EVENT_TYPE_NOTIFIER:                                   \
        {                                                                     \
                struct lttng_ust_event_notifier *__event_notifier = (struct lttng_ust_event_notifier *) __event->child; \
+               struct lttng_ust_notification_ctx __notif_ctx;                \
+                                                                             \
+               __notif_ctx.struct_size = sizeof(struct lttng_ust_notification_ctx); \
+               __notif_ctx.eval_capture = CMM_ACCESS_ONCE(__event_notifier->eval_capture); \
                                                                              \
-               if (caa_unlikely(!cds_list_empty(&__event_notifier->capture_bytecode_runtime_head))) \
+               if (caa_unlikely(!__interpreter_stack_prepared && __notif_ctx.eval_capture)) \
                        __event_prepare_interpreter_stack__##_provider##___##_name(__stackvar.__interpreter_stack_data, \
                                _TP_ARGS_DATA_VAR(_args));                    \
                                                                              \
                __event_notifier->notification_send(__event_notifier,         \
-                               __stackvar.__interpreter_stack_data);         \
+                               __stackvar.__interpreter_stack_data,          \
+                               &__notif_ctx);                                \
                break;                                                        \
        }                                                                     \
        }                                                                     \
@@ -973,6 +962,19 @@ LTTNG_TP_EXTERN_C const char *_model_emf_uri___##__provider##___##__name   \
 
 #undef LTTNG_TP_EXTERN_C
 
+/*
+ * Stage 7.0 of tracepoint event generation.
+ *
+ * Declare toplevel descriptor for the whole probe.
+ * Unlike C, C++ does not allow tentative definitions. Therefore, we
+ * need to explicitly declare the variable with "extern", using hidden
+ * visibility to keep this symbol from being exported to the global
+ * symbol table.
+ */
+
+extern struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER)
+       __attribute__((visibility("hidden")));
+
 /*
  * Stage 7.1 of tracepoint event generation.
  *
@@ -994,7 +996,8 @@ static const char *                                                        \
        __attribute__((weakref ("_model_emf_uri___" #_provider "___" #_name)));\
 static struct lttng_ust_event_desc __event_desc___##_provider##_##_name = {    \
        .struct_size = sizeof(struct lttng_ust_event_desc),                    \
-       .name = #_provider ":" #_name,                                         \
+       .event_name = #_name,                                                  \
+       .probe_desc = &__probe_desc___##_provider,                             \
        .probe_callback = (void (*)(void)) &__event_probe__##_provider##___##_template, \
        .ctx = NULL,                                                           \
        .fields = __event_fields___##_provider##___##_template,                \
@@ -1031,10 +1034,9 @@ static struct lttng_ust_event_desc *_TP_COMBINE_TOKENS(__event_desc___, TRACEPOI
  * Create a toplevel descriptor for the whole probe.
  */
 
-/* non-const because list head will be modified when registered. */
-static struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = {
+struct lttng_ust_probe_desc _TP_COMBINE_TOKENS(__probe_desc___, TRACEPOINT_PROVIDER) = {
        .struct_size = sizeof(struct lttng_ust_probe_desc),
-       .provider = __tp_stringify(TRACEPOINT_PROVIDER),
+       .provider_name = __tp_stringify(TRACEPOINT_PROVIDER),
        .event_desc = _TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER),
        .nr_events = _TP_ARRAY_SIZE(_TP_COMBINE_TOKENS(__event_desc___, TRACEPOINT_PROVIDER)) - 1,
        .head = { NULL, NULL },
@@ -1059,8 +1061,9 @@ static int _TP_COMBINE_TOKENS(__probe_register_refcount___, TRACEPOINT_PROVIDER)
 
 /* Reset all macros within TRACEPOINT_EVENT */
 #include <lttng/ust-tracepoint-event-reset.h>
-static void lttng_ust_notrace __attribute__((constructor))
-_TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void);
+static void
+_TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void)
+       lttng_ust_notrace __attribute__((constructor));
 static void
 _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void)
 {
@@ -1086,8 +1089,9 @@ _TP_COMBINE_TOKENS(__lttng_events_init__, TRACEPOINT_PROVIDER)(void)
        }
 }
 
-static void lttng_ust_notrace __attribute__((destructor))
-_TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void);
+static void
+_TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void)
+       lttng_ust_notrace __attribute__((destructor));
 static void
 _TP_COMBINE_TOKENS(__lttng_events_exit__, TRACEPOINT_PROVIDER)(void)
 {
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